Run checkIncludes.py from "make check-includes"

Makefile.am

@@ -100,6 +100,7 @@ EXTRA_DIST+= \
 	Makefile.nmake					\
 	README						\
 	ReleaseNotes					\
+	scripts/maint/checkIncludes.py                  \
 	scripts/maint/checkSpace.pl
 
 ## This tells etags how to find mockable function definitions.
@@ -267,6 +268,11 @@ if USE_PERL
 		$(top_srcdir)/src/tools/*.[ch]
 endif
 
+check-includes:
+if USEPYTHON
+	$(top_srcdir)/scripts/maint/checkIncludes.py
+endif
+
 check-docs: all
 	$(PERL) $(top_builddir)/scripts/maint/checkOptionDocs.pl